The week's pick
Reseach Article
Characterization of Angular Error in Magnetic Head Tracking
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 73 - Number 19 |
| Year of Publication: 2013 |
| Authors: Harjot Singh, Vinod Karar, Naresh Kumar |
10.5120/12993-0238
|
Harjot Singh, Vinod Karar, Naresh Kumar . Characterization of Angular Error in Magnetic Head Tracking. International Journal of Computer Applications. 73, 19 ( July 2013), 21-26. DOI=10.5120/12993-0238
Abstract
The head tracking system in a helmet mounted display (HMD) play a vital role in obtaining its full functionality. It tracks and calculates the current location and coordinates of the pilot's head movements and updates the head movement's location in real time. They provide accurate information to the flight computer about the orientation of the head of the pilot with high degree accuracy and extremely low impact on Helmet mounted display (HMD) weight, size and packaging. The magnetic head tracking are used widely for head tracking. It determines the pilot's head position, relaying this position to the sensor, the sensor's movement to the correct line-of-sight, the sensor's acquisition of the scene, and transmitting and presenting the final imagery on the helmet mounted display. All this takes some finite time. In this paper, discussions have been made about the angular error associated with the magnetic head tracking technique which is mostly used today due to its several advantages. The magnet head tracking has been evaluated and the angular error and the factors associated with this technique have been studied in detail. Since magnetic sensors are very sensitive to environment, their operational limitation was evident in the experimental results when the magnetic receiver located on the helmet was moved away from the magnetic transmitter in the linear as well as the angular distance. Hence, they are not easy to operate. The angular error in magnetic head tracking has been characterized and subsequently the correction algorithm has been implemented using LabVIEW in real time.
References
- Takemura K, Matsunloto Y. and Ogasawara T. "Drive Monitoring System Based on Non-Contact Measurement System of Driver's Focus of Visual Attention", Proc. of IEEE Intelligent Vehicles Symposium, pp. 581-586, 2003
- F. F Mulholland, "Helmet-mounted display accuracy in the aircraft cockpit," in proceeding SPIE, vol. 4711, Aug. 2002, pp. 145-151
- Aaron L. Garrett "Reduction of Latency in Virtual Environment Applications" 2002.
- Joshua Borah "Technology and Application of Head Based Control" paper presented at the RTO HFM Symposium on current aero medical Issues in Rotary wing Operation held in San Diego, USA 19-21 October 1998
- Ari Abramson, Ilan Efrat "Reduction of multiple harmonic EM noise in Helicopter cockpit"2011 IEEE
- O. Nevo "Display and sight helmet system" in proceeding of the Aerospace and electronics Conference, NAECON, May 1990. Pp. 265-270
- Gabriel Zachmann "Distortion Correction of Magnetic Fields for Position Tracking" Fraunhofer Institute for Computer Graphics Wilhelminenstrasse 764283 Darmstadt, Germany
- Ali M. Malkawi, Ravi S. Srinivasan "Building Performance Visualization Using Augmented Reality" International conference Graphic on 2004, Moscow, Russia.
- Aaron L. Garrett "Reduction of Latency in Virtual Environment Applications" MastersThesis2002. pdf.
- Harjot Singh, Naresh Kumar, Vinod Karar and S S Saini "Performance Comparison: Optical and Magnetic Head Tracking" International Journal of IT, Engineering and Applied Sciences Research (IJIEASR) ISSN: 2319-4413 Volume 2, No. 3, March 2013
- James Lenz and Alan S. Edelstein "Magnetic Sensors and Their Applications" IEEE Sensors Journal, vol. 6, no. 3, June 2006
- KMA210 "datasheet" http://www. nxp. com/documents/ data_sheet/KMA210. pdf.
Index Terms
Keywords